sounds far fetched, unless he means a kiddie pool or something. heck, most bird shot wouldn't punch thru a swimming pool at 50 yards. not to mention for as far as the shooter probably was he'd have had to have been aiming like a howitzer and getting *really* lucky with the lob.
if the guy has burn holes from shotgun pellets, i'd be more likely to believe they were intentionally heated and set on the pool.
What I'm really curious about is the heat aspect (the phrase used was "burned" - I know it could just be reporterese huff).
I went hunting last weekend and as usual I had birdshot falling all around me. I have had it hit me several times, including on the skin. Never noticed if it was hot but really didn't try to find out. This is a big reason I wear safety specs hunting BTW.
I just wonder how hot lead shot is after it has a chance to be aired out 30-60 yards.